import collections.abc import gc import random import unittest import weakref from immutables.map import Map as PyMap class HashKey: _crasher = None def __init__(self, hash, name, *, error_on_eq_to=None): assert hash != -1 self.name = name self.hash = hash self.error_on_eq_to = error_on_eq_to def __repr__(self): if self._crasher is not None and self._crasher.error_on_repr: raise ReprError return ''.format(self.name, self.hash) def __hash__(self): if self._crasher is not None and self._crasher.error_on_hash: raise HashingError return self.hash def __eq__(self, other): if not isinstance(other, HashKey): return NotImplemented if self._crasher is not None and self._crasher.error_on_eq: raise EqError if self.error_on_eq_to is not None and self.error_on_eq_to is other: raise ValueError('cannot compare {!r} to {!r}'.format(self, other)) if other.error_on_eq_to is not None and other.error_on_eq_to is self: raise ValueError('cannot compare {!r} to {!r}'.format(other, self)) return (self.name, self.hash) == (other.name, other.hash) class KeyStr(str): def __hash__(self): if HashKey._crasher is not None and HashKey._crasher.error_on_hash: raise HashingError return super().__hash__() def __eq__(self, other): if HashKey._crasher is not None and HashKey._crasher.error_on_eq: raise EqError return super().__eq__(other) def __repr__(self, other): if HashKey._crasher is not None and HashKey._crasher.error_on_repr: raise ReprError return super().__eq__(other) class HashKeyCrasher: def __init__(self, *, error_on_hash=False, error_on_eq=False, error_on_repr=False): self.error_on_hash = error_on_hash self.error_on_eq = error_on_eq self.error_on_repr = error_on_repr def __enter__(self): if HashKey._crasher is not None: raise RuntimeError('cannot nest crashers') HashKey._crasher = self def __exit__(self, *exc): HashKey._crasher = None class HashingError(Exception): pass class EqError(Exception): pass class ReprError(Exception): pass class BaseMapTest: Map = None def test_hashkey_helper_1(self): k1 = HashKey(10, 'aaa') k2 = HashKey(10, 'bbb') self.assertNotEqual(k1, k2) self.assertEqual(hash(k1), hash(k2)) d = dict() d[k1] = 'a' d[k2] = 'b' self.assertEqual(d[k1], 'a') self.assertEqual(d[k2], 'b') def test_map_basics_1(self): h = self.Map() h = None # NoQA def test_map_basics_2(self): h = self.Map() self.assertEqual(len(h), 0) h2 = h.set('a', 'b') self.assertIsNot(h, h2) self.assertEqual(len(h), 0) self.assertEqual(len(h2), 1) self.assertIsNone(h.get('a')) self.assertEqual(h.get('a', 42), 42) self.assertEqual(h2.get('a'), 'b') h3 = h2.set('b', 10) self.assertIsNot(h2, h3) self.assertEqual(len(h), 0) self.assertEqual(len(h2), 1) self.assertEqual(len(h3), 2) self.assertEqual(h3.get('a'), 'b') self.assertEqual(h3.get('b'), 10) self.assertIsNone(h.get('b')) self.assertIsNone(h2.get('b')) self.assertIsNone(h.get('a')) self.assertEqual(h2.get('a'), 'b') h = h2 = h3 = None def test_map_basics_3(self): h = self.Map() o = object() h1 = h.set('1', o) h2 = h1.set('1', o) self.assertIs(h1, h2) def test_map_basics_4(self): h = self.Map() h1 = h.set('key', []) h2 = h1.set('key', []) self.assertIsNot(h1, h2) self.assertEqual(len(h1), 1) self.assertEqual(len(h2), 1) self.assertIsNot(h1.get('key'), h2.get('key')) def test_map_collision_1(self): k1 = HashKey(10, 'aaa') k2 = HashKey(10, 'bbb') k3 = HashKey(10, 'ccc') h = self.Map() h2 = h.set(k1, 'a') h3 = h2.set(k2, 'b') self.assertEqual(h.get(k1), None) self.assertEqual(h.get(k2), None) self.assertEqual(h2.get(k1), 'a') self.assertEqual(h2.get(k2), None) self.assertEqual(h3.get(k1), 'a') self.assertEqual(h3.get(k2), 'b') h4 = h3.set(k2, 'cc') h5 = h4.set(k3, 'aa') self.assertEqual(h3.get(k1), 'a') self.assertEqual(h3.get(k2), 'b') self.assertEqual(h4.get(k1), 'a') self.assertEqual(h4.get(k2), 'cc') self.assertEqual(h4.get(k3), None) self.assertEqual(h5.get(k1), 'a') self.assertEqual(h5.get(k2), 'cc') self.assertEqual(h5.get(k2), 'cc') self.assertEqual(h5.get(k3), 'aa') self.assertEqual(len(h), 0) self.assertEqual(len(h2), 1) self.assertEqual(len(h3), 2) self.assertEqual(len(h4), 2) self.assertEqual(len(h5), 3) def test_map_collision_2(self): A = HashKey(100, 'A') B = HashKey(101, 'B') C = HashKey(0b011000011100000100, 'C') D = HashKey(0b011000011100000100, 'D') E = HashKey(0b1011000011100000100, 'E') h = self.Map() h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') # BitmapNode(size=6 bitmap=0b100110000): # NULL: # BitmapNode(size=4 bitmap=0b1000000000000000000001000): # : 'a' # NULL: # CollisionNode(size=4 id=0x108572410): # : 'c' # : 'd' # : 'b' h = h.set(E, 'e') # BitmapNode(size=4 count=2.0 bitmap=0b110000 id=10b8ea5c0): # None: # BitmapNode(size=4 count=2.0 # bitmap=0b1000000000000000000001000 id=10b8ea518): # : 'a' # None: # BitmapNode(size=2 count=1.0 bitmap=0b10 # id=10b8ea4a8): # None: # BitmapNode(size=4 count=2.0 # bitmap=0b100000001000 # id=10b8ea4e0): # None: # CollisionNode(size=4 id=10b8ea470): # : 'c' # : 'd' # : 'e' # : 'b' def test_map_stress(self): COLLECTION_SIZE = 7000 TEST_ITERS_EVERY = 647 CRASH_HASH_EVERY = 97 CRASH_EQ_EVERY = 11 RUN_XTIMES = 3 for _ in range(RUN_XTIMES): h = self.Map() d = dict() for i in range(COLLECTION_SIZE): key = KeyStr(i) if not (i % CRASH_HASH_EVERY): with HashKeyCrasher(error_on_hash=True): with self.assertRaises(HashingError): h.set(key, i) h = h.set(key, i) if not (i % CRASH_EQ_EVERY): with HashKeyCrasher(error_on_eq=True): with self.assertRaises(EqError): h.get(KeyStr(i)) # really trigger __eq__ d[key] = i self.assertEqual(len(d), len(h)) if not (i % TEST_ITERS_EVERY): self.assertEqual(set(h.items()), set(d.items())) self.assertEqual(len(h.items()), len(d.items())) self.assertEqual(len(h), COLLECTION_SIZE) for key in range(COLLECTION_SIZE): self.assertEqual(h.get(KeyStr(key), 'not found'), key) keys_to_delete = list(range(COLLECTION_SIZE)) random.shuffle(keys_to_delete) for iter_i, i in enumerate(keys_to_delete): key = KeyStr(i) if not (iter_i % CRASH_HASH_EVERY): with HashKeyCrasher(error_on_hash=True): with self.assertRaises(HashingError): h.delete(key) if not (iter_i % CRASH_EQ_EVERY): with HashKeyCrasher(error_on_eq=True): with self.assertRaises(EqError): h.delete(KeyStr(i)) h = h.delete(key) self.assertEqual(h.get(key, 'not found'), 'not found') del d[key] self.assertEqual(len(d), len(h)) if iter_i == COLLECTION_SIZE // 2: hm = h dm = d.copy() if not (iter_i % TEST_ITERS_EVERY): self.assertEqual(set(h.keys()), set(d.keys())) self.assertEqual(len(h.keys()), len(d.keys())) self.assertEqual(len(d), 0) self.assertEqual(len(h), 0) # ============ for key in dm: self.assertEqual(hm.get(str(key)), dm[key]) self.assertEqual(len(dm), len(hm)) for i, key in enumerate(keys_to_delete): if str(key) in dm: hm = hm.delete(str(key)) dm.pop(str(key)) self.assertEqual(hm.get(str(key), 'not found'), 'not found') self.assertEqual(len(d), len(h)) if not (i % TEST_ITERS_EVERY): self.assertEqual(set(h.values()), set(d.values())) self.assertEqual(len(h.values()), len(d.values())) self.assertEqual(len(d), 0) self.assertEqual(len(h), 0) self.assertEqual(list(h.items()), []) def test_map_delete_1(self): A = HashKey(100, 'A') B = HashKey(101, 'B') C = HashKey(102, 'C') D = HashKey(103, 'D') E = HashKey(104, 'E') Z = HashKey(-100, 'Z') Er = HashKey(103, 'Er', error_on_eq_to=D) h = self.Map() h = h.set(A, 'a') h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') h = h.set(E, 'e') orig_len = len(h) # BitmapNode(size=10 bitmap=0b111110000 id=0x10eadc618): # : 'a' # : 'b' # : 'c' # : 'd' # : 'e' h = h.delete(C) self.assertEqual(len(h), orig_len - 1) with self.assertRaisesRegex(ValueError, 'cannot compare'): h.delete(Er) h = h.delete(D) self.assertEqual(len(h), orig_len - 2) with self.assertRaises(KeyError) as ex: h.delete(Z) self.assertIs(ex.exception.args[0], Z) h = h.delete(A) self.assertEqual(len(h), orig_len - 3) self.assertEqual(h.get(A, 42), 42) self.assertEqual(h.get(B), 'b') self.assertEqual(h.get(E), 'e') def test_map_delete_2(self): A = HashKey(100, 'A') B = HashKey(201001, 'B') C = HashKey(101001, 'C') BLike = HashKey(201001, 'B-like') D = HashKey(103, 'D') E = HashKey(104, 'E') Z = HashKey(-100, 'Z') Er = HashKey(201001, 'Er', error_on_eq_to=B) h = self.Map() h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') h = h.set(E, 'e') h = h.set(B, 'b') # trigger branch in BitmapNode.assoc with self.assertRaises(KeyError): h.delete(BLike) # trigger branch in BitmapNode.without orig_len = len(h) # BitmapNode(size=8 bitmap=0b1110010000): # : 'a' # : 'd' # : 'e' # NULL: # BitmapNode(size=4 bitmap=0b100000000001000000000): # : 'b' # : 'c' with self.assertRaisesRegex(ValueError, 'cannot compare'): h.delete(Er) with self.assertRaises(KeyError) as ex: h.delete(Z) self.assertIs(ex.exception.args[0], Z) self.assertEqual(len(h), orig_len) h = h.delete(C) self.assertEqual(len(h), orig_len - 1) h = h.delete(B) self.assertEqual(len(h), orig_len - 2) h = h.delete(A) self.assertEqual(len(h), orig_len - 3) self.assertEqual(h.get(D), 'd') self.assertEqual(h.get(E), 'e') with self.assertRaises(KeyError): h = h.delete(A) with self.assertRaises(KeyError): h = h.delete(B) h = h.delete(D) h = h.delete(E) self.assertEqual(len(h), 0) def test_map_delete_3(self): A = HashKey(0b00000000001100100, 'A') B = HashKey(0b00000000001100101, 'B') C = HashKey(0b11000011100000100, 'C') D = HashKey(0b11000011100000100, 'D') X = HashKey(0b01000011100000100, 'Z') Y = HashKey(0b11000011100000100, 'Y') E = HashKey(0b00000000001101000, 'E') h = self.Map() h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') h = h.set(E, 'e') self.assertEqual(len(h), 5) h = h.set(C, 'c') # trigger branch in CollisionNode.assoc self.assertEqual(len(h), 5) orig_len = len(h) with self.assertRaises(KeyError): h.delete(X) with self.assertRaises(KeyError): h.delete(Y) # BitmapNode(size=6 bitmap=0b100110000): # NULL: # BitmapNode(size=4 bitmap=0b1000000000000000000001000): # : 'a' # NULL: # CollisionNode(size=4 id=0x108572410): # : 'c' # : 'd' # : 'b' # : 'e' h = h.delete(A) self.assertEqual(len(h), orig_len - 1) h = h.delete(E) self.assertEqual(len(h), orig_len - 2) self.assertEqual(h.get(C), 'c') self.assertEqual(h.get(B), 'b') h2 = h.delete(C) self.assertEqual(len(h2), orig_len - 3) h2 = h.delete(D) self.assertEqual(len(h2), orig_len - 3) self.assertEqual(len(h), orig_len - 2) def test_map_delete_4(self): A = HashKey(100, 'A') B = HashKey(101, 'B') C = HashKey(100100, 'C') D = HashKey(100100, 'D') E = HashKey(100100, 'E') h = self.Map() h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') h = h.set(E, 'e') orig_len = len(h) # BitmapNode(size=4 bitmap=0b110000): # NULL: # BitmapNode(size=4 bitmap=0b1000000000000000000001000): # : 'a' # NULL: # CollisionNode(size=6 id=0x10515ef30): # : 'c' # : 'd' # : 'e' # : 'b' h = h.delete(D) self.assertEqual(len(h), orig_len - 1) h = h.delete(E) self.assertEqual(len(h), orig_len - 2) h = h.delete(C) self.assertEqual(len(h), orig_len - 3) h = h.delete(A) self.assertEqual(len(h), orig_len - 4) h = h.delete(B) self.assertEqual(len(h), 0) def test_map_delete_5(self): h = self.Map() keys = [] for i in range(17): key = HashKey(i, str(i)) keys.append(key) h = h.set(key, 'val-{}'.format(i)) collision_key16 = HashKey(16, '18') h = h.set(collision_key16, 'collision') # ArrayNode(id=0x10f8b9318): # 0:: # BitmapNode(size=2 count=1 bitmap=0b1): # : 'val-0' # # ... 14 more BitmapNodes ... # # 15:: # BitmapNode(size=2 count=1 bitmap=0b1): # : 'val-15' # # 16:: # BitmapNode(size=2 count=1 bitmap=0b1): # NULL: # CollisionNode(size=4 id=0x10f2f5af8): # : 'val-16' # : 'collision' self.assertEqual(len(h), 18) h = h.delete(keys[2]) self.assertEqual(len(h), 17) h = h.delete(collision_key16) self.assertEqual(len(h), 16) h = h.delete(keys[16]) self.assertEqual(len(h), 15) h = h.delete(keys[1]) self.assertEqual(len(h), 14) with self.assertRaises(KeyError) as ex: h.delete(keys[1]) self.assertIs(ex.exception.args[0], keys[1]) self.assertEqual(len(h), 14) for key in keys: if key in h: h = h.delete(key) self.assertEqual(len(h), 0) def test_map_delete_6(self): h = self.Map() h = h.set(1, 1) h = h.delete(1) self.assertEqual(len(h), 0) self.assertEqual(h, self.Map()) def test_map_items_1(self): A = HashKey(100, 'A') B = HashKey(201001, 'B') C = HashKey(101001, 'C') D = HashKey(103, 'D') E = HashKey(104, 'E') F = HashKey(110, 'F') h = self.Map() h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') h = h.set(E, 'e') h = h.set(F, 'f') it = h.items() self.assertEqual( set(list(it)), {(A, 'a'), (B, 'b'), (C, 'c'), (D, 'd'), (E, 'e'), (F, 'f')}) def test_map_items_2(self): A = HashKey(100, 'A') B = HashKey(101, 'B') C = HashKey(100100, 'C') D = HashKey(100100, 'D') E = HashKey(100100, 'E') F = HashKey(110, 'F') h = self.Map() h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') h = h.set(E, 'e') h = h.set(F, 'f') it = h.items() self.assertEqual( set(list(it)), {(A, 'a'), (B, 'b'), (C, 'c'), (D, 'd'), (E, 'e'), (F, 'f')}) def test_map_items_3(self): h = self.Map() self.assertEqual(len(h.items()), 0) self.assertEqual(list(h.items()), []) def test_map_items_4(self): h = self.Map(a=1, b=2, c=3) k = h.items() self.assertEqual(set(k), {('a', 1), ('b', 2), ('c', 3)}) self.assertEqual(set(k), {('a', 1), ('b', 2), ('c', 3)}) def test_map_keys_1(self): A = HashKey(100, 'A') B = HashKey(101, 'B') C = HashKey(100100, 'C') D = HashKey(100100, 'D') E = HashKey(100100, 'E') F = HashKey(110, 'F') h = self.Map() h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') h = h.set(E, 'e') h = h.set(F, 'f') self.assertEqual(set(list(h.keys())), {A, B, C, D, E, F}) self.assertEqual(set(list(h)), {A, B, C, D, E, F}) def test_map_keys_2(self): h = self.Map(a=1, b=2, c=3) k = h.keys() self.assertEqual(set(k), {'a', 'b', 'c'}) self.assertEqual(set(k), {'a', 'b', 'c'}) def test_map_values_1(self): A = HashKey(100, 'A') B = HashKey(101, 'B') C = HashKey(100100, 'C') D = HashKey(100100, 'D') E = HashKey(100100, 'E') F = HashKey(110, 'F') h = self.Map() h = h.set(A, 'a') h = h.set(B, 'b') h = h.set(C, 'c') h = h.set(D, 'd') h = h.set(E, 'e') h = h.set(F, 'f') self.assertEqual(set(list(h.values())), {'a', 'b', 'c', 'd', 'e', 'f'}) def test_map_values_2(self): h = self.Map(a=1, b=2, c=3) k = h.values() self.assertEqual(set(k), {1, 2, 3}) self.assertEqual(set(k), {1, 2, 3}) def test_map_eq_1(self): A = HashKey(100, 'A') B = HashKey(101, 'B') C = HashKey(100100, 'C') D = HashKey(100100, 'D') E = HashKey(120, 'E') h1 = self.Map() h1 = h1.set(A, 'a') h1 = h1.set(B, 'b') h1 = h1.set(C, 'c') h1 = h1.set(D, 'd') h2 = self.Map() h2 = h2.set(A, 'a') self.assertFalse(h1 == h2) self.assertTrue(h1 != h2) h2 = h2.set(B, 'b') self.assertFalse(h1 == h2) self.assertTrue(h1 != h2) h2 = h2.set(C, 'c') self.assertFalse(h1 == h2) self.assertTrue(h1 != h2) h2 = h2.set(D, 'd2') self.assertFalse(h1 == h2) self.assertTrue(h1 != h2) h2 = h2.set(D, 'd') self.assertTrue(h1 == h2) self.assertFalse(h1 != h2) h2 = h2.set(E, 'e') self.assertFalse(h1 == h2) self.assertTrue(h1 != h2) h2 = h2.delete(D) self.assertFalse(h1 == h2) self.assertTrue(h1 != h2) h2 = h2.set(E, 'd') self.assertFalse(h1 == h2) self.assertTrue(h1 != h2) def test_map_eq_2(self): A = HashKey(100, 'A') Er = HashKey(100, 'Er', error_on_eq_to=A) h1 = self.Map() h1 = h1.set(A, 'a') h2 = self.Map() h2 = h2.set(Er, 'a') with self.assertRaisesRegex(ValueError, 'cannot compare'): h1 == h2 with self.assertRaisesRegex(ValueError, 'cannot compare'): h1 != h2 def test_map_eq_3(self): self.assertNotEqual(self.Map(), 1) def test_map_gc_1(self): A = HashKey(100, 'A') h = self.Map() h = h.set(0, 0) # empty Map node is memoized in _map.c ref = weakref.ref(h) a = [] a.append(a) a.append(h) b = [] a.append(b) b.append(a) h = h.set(A, b) del h, a, b gc.collect() gc.collect() gc.collect() self.assertIsNone(ref()) def test_map_gc_2(self): A = HashKey(100, 'A') h = self.Map() h = h.set(A, 'a') h = h.set(A, h) ref = weakref.ref(h) hi = iter(h.items()) next(hi) del h, hi gc.collect() gc.collect() gc.collect() self.assertIsNone(ref()) def test_map_in_1(self): A = HashKey(100, 'A') AA = HashKey(100, 'A') B = HashKey(101, 'B') h = self.Map() h = h.set(A, 1) self.assertTrue(A in h) self.assertFalse(B in h) with self.assertRaises(EqError): with HashKeyCrasher(error_on_eq=True): AA in h with self.assertRaises(HashingError): with HashKeyCrasher(error_on_hash=True): AA in h def test_map_getitem_1(self): A = HashKey(100, 'A') AA = HashKey(100, 'A') B = HashKey(101, 'B') h = self.Map() h = h.set(A, 1) self.assertEqual(h[A], 1) self.assertEqual(h[AA], 1) with self.assertRaises(KeyError): h[B] with self.assertRaises(EqError): with HashKeyCrasher(error_on_eq=True): h[AA] with self.assertRaises(HashingError): with HashKeyCrasher(error_on_hash=True): h[AA] def test_repr_1(self): h = self.Map() self.assertTrue(repr(h).startswith('